updated bords/mappers/stuff to 0.98.15, lots of them got broken, asmcore support...

[fceu.git] / boards / super24.c

/* FCE Ultra - NES/Famicom Emulator\r
 *\r
 * Copyright notice for this file:\r
 *  Copyright (C) 2005 CaH4e3\r
 *\r
 * This program is free software; you can redistribute it and/or modify\r
 * it under the terms of the GNU General Public License as published by\r
 * the Free Software Foundation; either version 2 of the License, or\r
 * (at your option) any later version.\r
 *\r
 * This program is distributed in the hope that it will be useful,\r
 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
 * GNU General Public License for more details.\r
 *\r
 * You should have received a copy of the GNU General Public License\r
 * along with this program; if not, write to the Free Software\r
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\r
 */\r
\r
#include "mapinc.h"\r
#include "mmc3.h"\r
\r
static uint8 *CHRRAM = NULL;\r
static uint8 resetmode;\r
static int masko8[8]={63,31,15,1,3,0,0,0};\r
\r
static void Super24PW(uint32 A, uint8 V)\r
{\r
 uint32 NV=V&masko8[EXPREGS[0]&7];\r
 NV|=(EXPREGS[1]<<1);\r
 setprg8r((NV>>6)&0xF,A,NV);\r
}\r
\r
static void Super24CW(uint32 A, uint8 V)\r
{\r
 if(EXPREGS[0]&0x20)\r
  setchr1r(0x10,A,V);\r
 else\r
 {\r
  uint32 NV=V|(EXPREGS[2]<<3);\r
  setchr1r((NV>>9)&0xF,A,NV);\r
 }\r
}\r
\r
static DECLFW(Super24Write)\r
{\r
 switch(A)\r
 {\r
  case 0x5FF0: EXPREGS[0]=V;\r
               FixMMC3PRG(MMC3_cmd);\r
               FixMMC3CHR(MMC3_cmd);\r
               break;\r
  case 0x5FF1: EXPREGS[1]=V;\r
               FixMMC3PRG(MMC3_cmd);\r
               break;\r
  case 0x5FF2: EXPREGS[2]=V;\r
               FixMMC3CHR(MMC3_cmd);\r
               break;\r
 }\r
}\r
\r
static DECLFW(Super24IRQ)\r
{\r
  switch(A&0xE001)\r
  {\r
    case 0xc000: IRQLatch=V;\r
                 if(resetmode==1)\r
                   IRQCount=IRQLatch;\r
                 break;\r
    case 0xc001: resetmode=1;\r
                 IRQCount=IRQLatch;\r
                 break;\r
    case 0xE000: IRQa=0;\r
                 X6502_IRQEnd(FCEU_IQEXT);\r
                 if(resetmode==1)\r
                   IRQCount=IRQLatch;\r
                 break;\r
    case 0xE001: IRQa=1;\r
                 if(resetmode==1)\r
                   IRQCount=IRQLatch;\r
                 break;\r
  }\r
}\r
\r
static void Super24HB(void)\r
{\r
  resetmode=0;\r
  if(IRQCount!=0)\r
  {\r
    IRQCount--;\r
    if(IRQCount==0)\r
    {\r
      if(IRQa)\r
      {\r
        resetmode=1;\r
        X6502_IRQBegin(FCEU_IQEXT);\r
      }\r
    }\r
  }\r
}\r
\r
static void Super24Power(void)\r
{\r
 EXPREGS[0]=0x24;\r
 EXPREGS[1]=159;\r
 EXPREGS[2]=0;\r
 GenMMC3Power();\r
 SetWriteHandler(0x5000,0x7FFF,Super24Write);\r
 SetWriteHandler(0xC000,0xFFFF,Super24IRQ);\r
 SetReadHandler(0x8000,0xFFFF,CartBR);\r
}\r
\r
static void Super24Reset(void)\r
{\r
 EXPREGS[0]=0x24;\r
 EXPREGS[1]=159;\r
 EXPREGS[2]=0;\r
 MMC3RegReset();\r
}\r
\r
static void Super24Close(void)\r
{\r
 if(CHRRAM)\r
  FCEU_gfree(CHRRAM);\r
 CHRRAM = NULL;\r
}\r
\r
void Super24_Init(CartInfo *info)\r
{\r
 info->Power=Super24Power;\r
 info->Reset=Super24Reset;\r
 info->Close=Super24Close;\r
 cwrap=Super24CW;\r
 pwrap=Super24PW;\r
  CHRRAM=(uint8*)FCEU_gmalloc(8192);\r
 SetupCartCHRMapping(0x10, CHRRAM, 8192, 1);\r
 GameHBIRQHook=Super24HB;\r
 AddExState(CHRRAM, 8192, 0, "CHRR");\r
 AddExState(EXPREGS, 3, 0, "BIG2");\r
}\r